You Only Senior Once - an expression used by both seniors in high school and seniors in college as an excuse to do something stupid or crazy. It's similar to "YOLO", but is reserved solely for the use of seniors.
by aaayo September 16, 2015
Your Only Squirt Once
by FabledPoet October 24, 2012
by MooMooMooMOOOO June 22, 2017
You only slide once. Termed for when you go on waterslides at waterparks and perform dangerous stunts and tricks on them. This usually occurs on rather large slides, with quite a bit of height.
by Brownie724 September 14, 2012
You Only Stick Once. The process of hitting on multiple people knowing that you will at least hook up with one of them. The genesis of this acronym comes from the expression, "Throw enough shit against the wall and something is bound to stick."
by aro8888 August 20, 2014
A douchebag way of rubbing into people who aren't seniors. Stands for "You're Only a Senior Once". Using it too much will cause people (underclassmen) to hate you.
Junior: Oh shit nigga, I got soo much AP Bio HW, looks like I can't make G's awesome ass/thug party.
Senior: Hahaha sucks. #YOSO son. I don't gotta do shit nigga
Senior: Hahaha sucks. #YOSO son. I don't gotta do shit nigga
by Neil Patrick Harriss September 10, 2012
The love child of "yo" and "so". Used to catch a peer's attention when one is about to say something important. Often capitalized when the shock factor of what the speaker is saying exceeds lowercase letters, becoming YOSO! When one is expressing concern or wary, they might draw the letters out to resemble "yooooossooooo". Derived from the popular comedy duo Jake and Amir. May also be used as a greeting between two friends.
Nicole: Yoso my cat threw up in the bong water.
Diana: Ugh, tits.
or
Amir: Yoso, when it snows my feet, they bleed coz my shoes have holes and I can nay afford socks'o.
or
Randall: YOSO PARTY AT MY PLACE TONIGHT!
or
Friend #1: Yoso
Friend#2: Yooosoooo I have a test tomorrow and I'm not ready!
Diana: Ugh, tits.
or
Amir: Yoso, when it snows my feet, they bleed coz my shoes have holes and I can nay afford socks'o.
or
Randall: YOSO PARTY AT MY PLACE TONIGHT!
or
Friend #1: Yoso
Friend#2: Yooosoooo I have a test tomorrow and I'm not ready!
by nicomeowmeow June 12, 2011